The 2019 Production Alliance Group 300 was a NASCAR Xfinity Series race held on March 16, 2019, at Auto Club Speedway in Fontana, California. Contested over 150 laps on the D-shaped oval, it was the fifth race of the 2019 NASCAR Xfinity Series season.
Entry list
Practice
First practice
Cole Custer was the fastest in the first practice session with a time of 40.669 seconds and a speed of .
Final practice
Justin Allgaier was the fastest in the final practice session with a time of 40.436 seconds and a speed of .
Qualifying
Tyler Reddick scored the pole for the race with a time of 40.031 seconds and a speed of .